<template>
  <view class="back"></view>
</template>

<style lang="less" scoped>
  .back {
    position: relative;
    width: 100%;
    padding: 0 0 100%;
    background: url('https://wx.2024csnl.com/assets/lottery2/lottery2-back.png') center center no-repeat;
    background-size: cover;
  }
</style>